<template>
    <div class="search-box">
      <i class="icon-search"></i>
      <input type="text" class="box" :placeholder="placeholder" v-model="query">
      <i class="icon-dismiss" v-show="query" @click="clear"></i>
    </div>
</template>

<script>
  import {debounce} from "common/js/util";

  export default {
        name: "search-box",
      props: {
          placeholder: {
            type: String,
            default: '搜索歌曲、歌手'
          }
      },
      data() {
          return {
            query: ''
          }
      },
      methods: {
        clear() {
          this.query = ''
        },
        // 暴露一个接口
        setQuery(query) {
          this.query = query
        }
      },
      created() {
          // 当query发生变化时 监听query
          this.$watch('query',debounce((newQuery) => {
            this.$emit('query',newQuery)
          },200))
      }
    }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"

  .search-box
    display: flex
    align-items: center
    box-sizing: border-box
    width: 100%
    padding: 0 6px
    height: 40px
    background: $color-highlight-background
    border-radius: 6px
    .icon-search
      font-size: 24px
      color: $color-background
    .box
      flex: 1
      margin: 0 5px
      line-height: 18px
      background: $color-highlight-background
      color: $color-text
      font-size: $font-size-medium
      &::placeholder
        color: $color-text-d
    .icon-dismiss
      font-size: 16px
      color: $color-background
</style>
